Television Closed Caption Mode Auto-Identification
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Solution Overview
Problem
Users face difficulties in selecting the correct Closed Caption (CC) mode for television programs due to the lack of clear information about the CC signal type, leading to cumbersome manual selection and potential absence of CC contents.
Innovation Solution
A method and device that decode CC program signals to identify the corresponding CC mode using field, channel, and service type identification bits, and display CC contents based on preset rules, simplifying the selection process by providing clear guidance on available modes and prioritizing the highest priority mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual mode selection is required for CC programs, then the television can support multiple CC modes (CC1-CC4, TX1-TX4), but the user operation becomes cumbersome and time-consuming
Solution Approach 1:
The television system automatically detects and identifies the CC mode carried by the program signal without requiring user intervention. The controller decodes the program signal to obtain type information, automatically determines the correct CC mode (CC1-CC4 or TX1-TX4), and activates it, making the system serve itself rather than requiring manual user configuration
Solution Approach 2:
The system performs preliminary detection of CC mode information during signal decoding before the user needs to watch the program. By pre-identifying the CC mode through type information in the program signal, the television prepares the correct caption mode in advance, eliminating the need for users to manually try different modes during viewing
2Adaptability or versatility
If users must select CC modes manually to find the correct one, then the television can handle programs with different CC modes, but the time required to find the correct mode increases
Solution Approach 1:
The system uses feedback from decoding the program signal to automatically identify the CC mode. The controller continuously monitors the program signal, decodes it to extract type information, and uses this feedback to automatically select the correct CC mode, eliminating the trial-and-error process that wastes user time
Solution Approach 2:
The patent replaces the mechanical manual selection process with an automated electronic detection and identification system. Instead of users manually switching through modes, the controller automatically decodes program signals, identifies CC mode information through type bits, and electronically switches to the correct mode, dramatically reducing selection time
3Loss of information
If the television provides information about CC service status at predetermined intervals, then users can be informed of available modes, but the system complexity and information processing requirements increase
Solution Approach 1:
The system extracts only the essential CC mode identification information (type information including field bit, channel bit, text bit) from the program signal, separating this critical data from the rest of the signal processing. This extraction approach provides necessary information to users while avoiding the complexity of processing and displaying all possible CC service parameters
Data Source
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AI summary
The present disclosure provides a method and a device for identifying and displaying a CC mode of a television. The method includes: decoding received CC program signals to obtain decoding information; obtaining a CC mode corresponding to the CC program signals according to the decoding information; and performing corresponding display according to a preset rule based on the obtained CC mode. Compared with the existed technology, the embodiment of the present disclosure decodes the CC program signals, identifies the corresponding CC mode according to the decoding information, and displays the CC contents according to the identified CC mode, which simplifies the choosing of the mode and thus is convenient for the user.